# Tag Info

### Why don't Exif tags contain time zone information?

EXIF v2.31 (p49) defined time-zone offset fields in 2016 and the XMP time-zone guidelines (p33-34) also consider time-zones. The implementation in cameras and programs is rather minimalist at the ...
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### How can I incrementally date photos?

There's already a similar question on the ExifTool forums. It can be done using two sequential ExifTool commands. First, make sure all the date to the same exiftool -datetimeoriginal='2015:02:22 00:...
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### Is "Date Taken" Exif data possible on .PNG file, and is it possible to copy "Date Modified" to "Date Taken"?

What Windows displays under the "Date Taken" property isn't an embedded tag. It fills that property from a number of tags depending upon the file type. For example, for a JPG, Windows will use any of ...
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### Why don't Exif tags contain time zone information?

CIPA DC- 008 is the standard for Exif 2.2. Of note it makes no mention of "timezone." "GMT" is also not mentioned either. The term "UTC" does appear but only specifies the GPS time is recorded as such....
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### Correct timestamps after the fact

ExifTool is my go-to tool for time-shifting photos. Assuming Windows, to add 1 hour to all date/time fields stored in the photo metadata: exiftool.exe -AllDates+=1 C:\path\to\folder\of\photos or to ...
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### When exactly is "GPSTimeStamp"?

Yes, it is the time at which the location was determined. That may be a second before the picture was taken, but it could be much more, if for example you are in a canyon and the GPS is unable to make ...
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### Is "Date Taken" Exif data possible on .PNG file, and is it possible to copy "Date Modified" to "Date Taken"?

Very recent versions of PNG support EXIF, but a lot of software still does not understand or work with it. The lack of a standardized metadata block has been one of its big disadvantages for ...
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### How (the heck) did NASA photographer Joel Kowsky take this amazing photograph of the International Space Station transiting the Sun?

I've actually done this myself. The first time I was not successful. The second time I was successful. Considerations There are a few things that go into this. Planning -- finding a transit near ...
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### Is it possible to get the time a photo was taken (timezone-aware)?

Unfortunately not. Most cameras only have a 'dumb' timezone-ignorant clock. You do of course also have no guarantee that the clock is set right, so the timestamp in the EXIF data may be wrong anyway, ...
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### Is there any hope for Exif TimeZoneOffset as a standard?

I don't think any significant software which uses this. The EXIF standard is to assume that the time zone matches the correct one for the location where the photo was taken. Most cameras have ad hoc ...
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### How can I incrementally date photos?

Since the best answers use non-Windows syntax, I will here post their code converted for Microsoft Windows. @StarGeek solution, very fast and simple: First set a base timestamp to all images: ...
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### What do you do with your camera clock time in relation to time zones?

With regards to EXIF v2.31 (p49) time-zone integration (2016) and XMP time-zone guidelines (p34) it might make sense to look at this problem once more. Local time is important especially in the human-...
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### Is It Possible To Achieve a Time Lapse Over Several Months Using a Canon 70D Without Leaving the Camera

Yes, it is possible. The ideal case would be if it was visible from your home so that you can leave a tripod stationary and just attach the camera when you need to. If the construction site is ...
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### Why am I required to input the date and time on D5100 after charging the battery?

The Nikon D5100 uses a rechargeable internal clock battery. It should have enough charge to give you 3 months to charge the main battery. A main battery that is almost completely empty, should also ...
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### How to overlay date and time onto the corner of photos?

Please check out http://jambula.sourceforge.net/ to batch insert shooting date/time/comment on a jpeg image in different formats and languages. A special feature is that the date stamp is lossless. It ...

### How can I incrementally date photos?

Try Irfanview. It is freeware (AFAIR) and has a very flexible batch renaming system. Other than that I would try writing a script, something along the lines of for X in $(seq -w 0 20) ; do plus=$(...
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### How can I incrementally date photos?

Well, I didn't post my bash answer because the question specifically asked about a Windows solution, but since two other people did, here's what I came up with: for file in *.jpg do exiftool -...
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### How to set the viewfinder information display timer on a Canon 70D?

Some upper tier Canon cameras allow you to set the length of time the viewfinder display remains active when no buttons are pressed. A quick look at the EOS 70D Instruction Manual indicates this is ...
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### Internal clock reset after some time with no battery on GoPro Hero 3+ Black

There is one internal battery, which take care about the clock. Check please this web page, step 13, right image. If this battery is discharged (it is not rechargeable) lost of settings as clock is ...
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### Why am I required to input the date and time on D5100 after charging the battery?

Most cameras have a capacitor or internal battery that keeps the clock and settings active while the battery is being changed. If the camera is left with a dead battery for a very long time, the ...
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### How are reference developing times determined?

It is closely related to the determination of B&W film speed, which is specified in the standards ISO 6 and ISO 2240 and based on sensiometric density and contrast measurements of the negative. ...
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### Is there any way in Lightroom to sort photos from multiple days based on time of the day?

While I can't think of a way to do it with the built-in functions of Lightroom, it can be done with the help of the LR/Transporter Lightroom Plug-in (donationware; free version restricted to modifying ...
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### Where is capture time recorded in images from the Snapcam Lite wearable camera?

I'd suggest saving the timestamp directly into the file metadata. You can do this and rename an entire directory with a single exiftool command. Try this: exiftool -globalTimeShift -5:30 -d '%Y-%m-%...
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### Can I take a timelapse on a Gopro Hero 5?

Yes, you can swipe in from the right to select shoot modes. Timelapse is an option and you can even select how often it shoots a frame. https://www.camerajabber.com/shoot-time-lapse-video-gopro-...

### Is It Possible To Achieve a Time Lapse Over Several Months Using a Canon 70D Without Leaving the Camera

Short answer: Yes. Longer answer: Make sure you shoot with the same focal length (and - even better - using same lens). You'll have to note a couple of points in order to shoot the same frame (f.e. ...
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### How to precisely time tag DSLR shot?

This question has sort of already been asked. You can determine if the time in the Exif is the time when the shutter opens or when it closes (when it opens makes things a bit simpler because you won'...
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### Display .png file name as the text in the image corner

If you do not insist very much for opensource and you will agree with free software you can use XnView MP. Open in Browser mode Select images Ctrl+U (batch convert) For action select Image->Text ...
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1 vote

### Why am I required to input the date and time on D5100 after charging the battery?

There is usually an internal battery/capacitor that helps maintain small bits of information like date time and location. Most likely this battery is dead and causing you to re-enter the information. ...
1 vote
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### Where is capture time recorded in images from the Snapcam Lite wearable camera?

(The following solution is for a Linux Machine. However for other OS, one can something similar in spirit: SAVE your metadata before moving the images anywhere from the MicroSD) Using this command ...
1 vote

### Time lapse of solar eclipse?

Got the same idea but I'm lucky enough to take day off. I made some tests last Sunday and I will make a few adjustments Friday, but after gathering some more info on the net I will probably go for ...
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